DE69526045D1 - Lighting device for LCD and its manufacturing process - Google Patents

Lighting device for LCD and its manufacturing process

Info

Publication number
DE69526045D1
DE69526045D1 DE69526045T DE69526045T DE69526045D1 DE 69526045 D1 DE69526045 D1 DE 69526045D1 DE 69526045 T DE69526045 T DE 69526045T DE 69526045 T DE69526045 T DE 69526045T DE 69526045 D1 DE69526045 D1 DE 69526045D1
Authority
DE
Germany
Prior art keywords
lcd
manufacturing process
lighting device
lighting
manufacturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69526045T
Other languages
German (de)
Other versions
DE69526045T2 (en
Inventor
Peter Michael Peregrine
Robert Clifford Friml Newstead
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Oyj
Original Assignee
Nokia Oyj
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Oyj filed Critical Nokia Oyj
Application granted granted Critical
Publication of DE69526045D1 publication Critical patent/DE69526045D1/en
Publication of DE69526045T2 publication Critical patent/DE69526045T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
DE69526045T 1994-12-23 1995-11-24 Lighting device for LCD and its manufacturing process Expired - Lifetime DE69526045T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9426468A GB2296362B (en) 1994-12-23 1994-12-23 Illuminated LCD apparatus and method of manufacture

Publications (2)

Publication Number Publication Date
DE69526045D1 true DE69526045D1 (en) 2002-05-02
DE69526045T2 DE69526045T2 (en) 2002-11-07

Family

ID=10766762

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69526045T Expired - Lifetime DE69526045T2 (en) 1994-12-23 1995-11-24 Lighting device for LCD and its manufacturing process

Country Status (5)

Country Link
US (1) US5852483A (en)
EP (1) EP0718548B1 (en)
JP (1) JP3150595B2 (en)
DE (1) DE69526045T2 (en)
GB (1) GB2296362B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6219117B1 (en) 1996-06-12 2001-04-17 Alps Electric Co., Ltd. Liquid crystal display device
TW464784B (en) * 1996-12-06 2001-11-21 Alps Electric Co Ltd Liquid crystal display device
JPH11125816A (en) * 1997-10-21 1999-05-11 Rohm Co Ltd Structure for backlight liquid crystal display device
FI114267B (en) * 1998-01-29 2004-09-15 Nokia Corp Electronic device and method for displaying information
DE19803659A1 (en) 1998-01-30 1999-08-05 Nokia Mobile Phones Ltd Navigation methods, in particular for vehicles
JP3642263B2 (en) * 2000-05-23 2005-04-27 セイコーエプソン株式会社 Liquid crystal device and electronic device
JP2002311862A (en) * 2001-04-16 2002-10-25 Matsushita Electric Ind Co Ltd Display device
JP4226796B2 (en) * 2001-05-30 2009-02-18 株式会社日立製作所 Liquid crystal display
US8324640B2 (en) * 2004-07-02 2012-12-04 GE Lighting Solutions, LLC LED-based edge lit illumination system
US20060274551A1 (en) * 2005-05-26 2006-12-07 Enplas Corporation Surface light source device and display
EP2389620A1 (en) * 2009-01-20 2011-11-30 TouchSensor Technologies, L.L.C. User interface with means for light bleed mitigation
US9690036B1 (en) * 2013-09-30 2017-06-27 Amazon Technologies, Inc. Controlling display lighting color and uniformity
JP6498258B1 (en) * 2017-11-17 2019-04-10 ミネベアミツミ株式会社 Surface lighting device
CN113900301A (en) * 2021-09-24 2022-01-07 佛山市国星光电股份有限公司 Light source module and backlight display module

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229003A (en) * 1985-07-30 1987-02-07 株式会社トキメック Back reflection type light diffuser
FI80536C (en) * 1988-04-15 1990-06-11 Nokia Mobira Oy matrix Display
DE69120349T2 (en) * 1990-06-19 1996-10-31 Enplas Corp Device for a flat light source
WO1992004400A1 (en) * 1990-09-04 1992-03-19 Ohno Research And Development Laboratories Co., Ltd. Plastic optical member having light diffusing layer on surface, and light quantity control member
JPH05297372A (en) * 1992-04-22 1993-11-12 Ricoh Co Ltd Liquid crystal display device
GB2267378B (en) * 1992-05-22 1996-07-10 Nokia Mobile Phones Uk Illuminated LCD apparatus
JP3006306B2 (en) * 1992-09-16 2000-02-07 インターナショナル・ビジネス・マシーンズ・コーポレイション Optical film and liquid crystal display device using the optical film
JP2630714B2 (en) * 1992-10-08 1997-07-16 茶谷産業株式会社 Surface lighting device

Also Published As

Publication number Publication date
JPH08234204A (en) 1996-09-13
US5852483A (en) 1998-12-22
GB2296362B (en) 1999-03-03
EP0718548B1 (en) 2002-03-27
EP0718548A2 (en) 1996-06-26
JP3150595B2 (en) 2001-03-26
GB9426468D0 (en) 1995-03-01
DE69526045T2 (en) 2002-11-07
EP0718548A3 (en) 1997-07-23
GB2296362A (en) 1996-06-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: BECKER, KURIG, STRAUS, 80336 MUENCHEN